Advertising apparatus



July 28, 1925.

F. G. GALLEY ADVERTISING APPARATUS 3 Sheets-Sheet 1 Filed Sept. 19,, 1922 July 28, 1925. v

- F. G. GAI LEY ADVERTISING APPMAT'JS Filed Sept. 19 1922 ll l I llllls July 2 ,1925.

F. G. GALLEY ADVERTISING APPARATUS Filed Sept. 19, 1922 I 5 Sheets-Sheet 5 Patented July 28, 1925.

UNITED STATES PATENT OFFICE.

FREDERICK GEORGE GALLEY, OF GIDEA PARK, ENGLAND, ASSIGNOR TO KENT- MITCHELL, LIMITED, LONDON, ENGLAND.

ADVERTISING APPARATUS.

Application filed September 19, 1922. SerialNo. 589,262.

To all whom it may concern:

Be it known that I, FREDERICK GEORGE GALLEY, a subject of the King of Great Britain, and resident of Gidea Park, in the county of Essex, England, have invented a certain new and useful Improvement in and Connected with Advertising Apparatus, of which the following is a specification.

This invention relates to advertising apparatus of that character wherein picture Sections are applied to flexible bands adapted to move intermittently over parallel rollers to effect changes of the picture or advertisement.

The improvements according to the present invention are particularly applicable to apparatus in which the picture carrying bands are wound in the manner described in British specification of Mitchell, No. 29,263, Dec. 18, 1913, that is to say, in which one storage roller is provided common to each two bands, such bands being led in opposite directions from the storage roller past their exhibiting positions onto a common tensioning roller.

In apparatus of the above character according to this invention one roller of each pair is positively driven by gearing or other ieans whilst the other roller is operatively connected to such positively driven roller by means of the picture carrying bands and a tensioning cord which winds onto the rollers in directions opposing that of the picture carrying bands. This tension cord winds upon the ends of the rollers and the portion of the positively driven roller carrying the same is made separate from the picture carrying band portion of this roller, an operative connection between the two being provided by means of a spiral clock spring for example. This construction permits the picture bands to wind on and off the rollers evenly, the clock spring connection compensating the varying peripheral speed of the opposite or front roller due to the changing diameter of the positively driven or rear rollers as the bands wind on and off the when the rear roller is driven in the opposite direction the bands are unwound therefrom and wound upon the front roller which is then driven by the tension cord through the medium of the spring connection between the two portions of the rear or positively rollervwill cease to revolve and as a consequence the picture carrying bands will be pushed out between the parallel supporting rollers at the front of the machine. As these springs are completely enclosed and therefore invisiblev it is impossible to ascertain their condition without dismantling the rear roller.

The object of the present invention is to provide. firstly, an apparatus inwhich the picture bands are maintained under an even tension and, secondly, in providing means which will give a visual indication of the condition of the spring in each rear roller and which will also function as a positive driving connection in one direction of ro- V tation between the two portions of each rear roller in the event of a spring breaking.

A further object of the invention is to provide means for maintainin the normal tension of each tension cord when a spring breaks. p

The present invention may therefore be said to consist broadly of an advertising apparatus comprising a pair of rollers, a picture carrying band or bands connected to said rollers so as to wind upon one roller while unwinding from the other roller a third roller connected to one of said pair of rollers by resilient means such as a spring, a tensioning cord connected to said third roller and to the other roller of the pair, that is, the roller which is not resiliently con nected to the third roller, said resilient connection operating through said cord to maintain said band or hands under an even tension and said tensioning cord being adapted to move in an opposite direction to the picture carrying band or bands and to wind upon one roller while unwinding from the other roller, and means for rotating said rollers in opposite directions alternatively.

In order that the invention may be clearly understood an embodiment of the same will now be described by aid ofthc accompanying drawings in which Fig. 1 is a perspective view showing a portion of the machine constructed and arranged in accordance witlrmy invention.

Fig. 2 is an end elevation showing one set of rollers and the tensioning device and method of winding the picture display bands and showing in dotted lines, under the rollers 4, a corresponding roller of the next unit 7 lers or tubes carried by brackets 6 supported by .angle iron girders 7.

Referring firstly to Figs. 2 and 3 the front roller or. drum 3 issuitably supported bythe brackets 2 with its axes disposed centrally of two exhibiting positions, whilst the rear or tension roller 4 also carried by thebrackets 2 is; disposed with its axesabove those of the roller 3, that is, with the lower 7 periphery disposed substantially centrally of the two exhibiting positions. Two picture carryingbands 8 pass from the bottom of the front roller. 3, one extending upwardly over an exhibiting position and rearwardly to be wound on. to the rear drum 4 from the bottom; the other pictureband passes downwardly over another exhibiting position and rearwardly on -to the same rear drum 4 winding on from the bottom of said drum.

' A tension cord 9 is wound on the reaiydrum 4 pass ngfrom the top of said drum'tothe bottonrof the front drum. The arrangement is such that as the picture band 8 winds on to the rear drum the tension cord 9 winds off thereardrum and on to the front drum in the usualmanner. An auxiliary tension device is provided having a grooved pulley 10 engag ng the tension cord 9,.the

said pulley being rotatably securedto a spring controlled lever 11. pivotally inountedat 12 toa suitable bracket 13. The spring 14 normally maintains the lever pressed down with its pulley 10 in contact with the cord 9. The rear drum is in two .portions connected by a clock spring, as will hereafter, appeanthe portion 4 being grooved to accommodate the tension cord 9. To the other portion 4 is secured a bracket 15 and h r a pin 16 is secured to the portion 4 By this means a visible indication is given, as the drum rotates, of the condition ofthe .spring 100 connecting the two portions of theroller. [For example whenthespring is whole and functioning correctly the relative posit-ions ofthe pin 16 and bracket 15 will vary after each revolution in a clockwise direction substantially inthe manner illustrated in Fig. 3, while on the other hand a in II of Fig. 3

if the spring breaks there will. be no substantial relative movement between these parts.

. Referringnow-to Fig. 8 it is to be understood that the initial position of the pin 16 relative to the bracket 15 is that shown inposition V and that in this position the connecting clock spring is under tension and tending to separate the pin 16 from the bracket 15. Furthermore in this initial position the bands are fully wound upon the front roller 8 so that the diameter of this roller is greater than the rearroller 4. ils a consequence the peripheral speed of the front 'roller 3 is less than the peripheral ,speed of'the rear roller 4. As'the portion 4 of therear roller 4 is connected tothe front roller 3 by the tension cord 9 the dis tance travelled by the periphery of this portion 4 is less than the distance travelled by the periphery of the portion 4 which difference causes-the pin-16 and bracket 15 to sep arate a certain distance which is indicated by therelative positions of these two parts and shown approximately at I in Fig. 3

During the next revolution the differencein' 'the peripheral speeds of fthe two rollers 3 roller 3. Nevertheless there is asmall difference in peripheral speeds during this second revolution and the resulting separating movement of the pin-16-and bracket 15 is added to the first separating movement of these parts and produces a separation equivalent approximately to the distance shown By this time the diameters ofthe two rollers have becomesubstantially the same so that during the next revolution there is no appreciable difference in their periplieral speeds. As a consequence the space separating the pin 16 and bracket 15 re mains for all practical purposesthe same as indicated at II. This will be clear upon referring to position III in Fig. 3. Immediatelythe diameter of roller 4 begins to exceed the diameter of the front roller 3 the resulting increase in the peripheral speed of the roller 3 is transmitted to the portion 4 of-the rear roller 4. As a result the tendency of-thisportion 4 is to overtake the portion 4" thereby 'educing the distance between-the pin 16 and bracket 15. This is clearly seen byreference to position 1V in Fig. 3 This difference in peripheral speeds of the two rollers increases until upon the completion of the next revolution the pin-16 is close up againstthe bracket asshown in position V of Fig. 3.

.In the event of one ofthe connecting sarin s breaking while the bands are unb b produced by the rear roller will continue to revolve both the front roller 3 and the portion 4* of the rear roller.

Upon reversing the direction of rotation however, the front roller would cease to revolve were it not for the pin 16 and bracket 15 as normally the front roller 3 is then driven by the portion 4F and tension cord 9. By the provision of the pin 16 and bracket 15, however, a positive driving connection is provided between the two portions 4* and l when rotation of the rear roller is in an anti-clockwise direction whilethe tension of the cord 9 is maintained in both directions of rotation by the pulle 10 and spring pressed lever 11. The drums Z3 and 4 are carried by or mounted upon ball bearings 17 provided on spindles 18 (see Fig. 4). These spindles are screw threaded at their respective ends and provided with nuts 19 so that adjustment of the bearings and drums is permitted. Suitably mounted upon the rear drum is a bevel wneel 20 meshing with a bevel 21 rotatable with a vertical shaft 22 driven from the operating mechanism. It will be understood that a bevel gear is provided for each rear drum, and a suitable supporting bracket 23 for the vertical shaft is secured to the frame girders of the machine. Further suitable coiled springs are looped to the pins 2% and each is riveted by its outer end to the roller at 25.

l/Vhat I claim and desire to secure by Letters Patent is 1. Advertising apparatus comprising a pair of rollers, a flexible band or bands carrying picture sections and adapted to wind on to one of said rollers while unwindingfrom the other roller of the pair, means for positively driving one of said rollers in either direction alternatively, said positively driven roller being in two portions which portions are operatively connected to each other resiliently such as by a spring so as to permit of movement between the two portions, a tension cord connecting said rollers, said tension cord being wound upon the rollers so as to move in an opposite direction to the band or bands one end of said cord being connected to that portion of the positively driven roller which is driven through the said resilient connection and means associated with the opposing ends of the two portions of the positively driven roller adapted to constitute a positive driving connection between the two portions of the roller in one direction of rotation in the event of failure or breakage of the resilient connection between such portions.

2. Advertising apparatus comprising a pair of rollers, a flexible band or bands carrying picture sections and adapted to wind on to one of said rollers while unwinding from the other roller of the pair, means for positively driving one of said rollers in either direction alternatively, said positively driven roller being in two portions which portions are operatively connected to each other resiliently such as by a spring so as to permit of movement between the two portions, a tension cord connecting said rollers, said tension cord being wound upon the rollers so as to move in an opposite direction to the band or bands one end of said c-ord being connected to that portion of the positively driven roller which is driven through the said resilient connection and means as sociated with the opposing ends of the two portions of the positively driven roller adapted to constitute a positive driving connection between the two portions of the roller in one direction of rotation in the event of failure or breakage of the resilient connection between such portions comprising two members, one of which members is carried by one portion of the divided roller and the other member by the other portion of said roller said members being-so arranged as to engage one with the other in the event of failure or breakage of the resilient connection in one direction of rotation of the roller.

3. Advertising apparatus comprising a pair of rollers, a flexible band or bands carrying picture sections and adapted to wind on to one of said rollers while unwinding from the other roller of the pair, means for positively driving one of said rollers in either direction alternatively, said positively driven roller being in two portions which portions are operatively connected to each other resiliently such as by a spring so as to permit of movement between the two portions, a tension cord connecting said rollers, said tension cord being wound upon the rollers so as to move in an opposite direction to the band or bands one end of said cord being connected to thatportion of the positively driven roller which is driven through the said resilient connection and means associated with the opposing ends of the two portions of the positively driven roller adapted to constitute a positive driving connection between the two portions of the roller in one direction of rotation in the event of failure or breakage of the resilient connection between such portions and means for maintaining the tension of the tensioning cord comprising a spring pressed arm which bears upon the cord through the me dium of a pulley.

In witness whereof I aflix my signature.

FREDERICK GEGRGE GALLEY. 

